Title :
Impact of synchronization on signal-to-noise ratio in a distributed radar system
Author :
Hurley, Sean M. ; Tummala, Murali ; Walker, Thaddeus O., III ; Pace, Phillip E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Naval Postgraduate Sch., Monterey, CA
Abstract :
Distributed radar systems are a subset of distributed sensor networks. They are classified as a system of systems due to the processing done at each sensor system and by the network as a whole. The potential signal-to-noise (SNR) gains of a distributed radar system are proportional to N2, where N is the number of sensors in the network. This potential is dependant on an assumption that the network transmitters and receivers are synchronized; this paper investigates this assumption. The focus of this work is the frequency, phase, and pulse synchronization of the pulses as they interact at the target. Feedback is discussed as a means of maintaining synchronization. The best case is for a reflected pulse to be in phase and overlap completely; the worst case is for the pulses to reflect in a manner that is non-overlapping. SNR decreases in a sinusoidal manner as synchronization is lost
Keywords :
radar signal processing; radar tracking; synchronisation; target tracking; wireless sensor networks; distributed radar system; distributed sensor network; frequency synchronization; network receiver; network transmitter; phase synchronization; pulse synchronization; signal-to-noise ratio; target tracking; Equations; Frequency synchronization; Radar antennas; Radar tracking; Receiving antennas; Sensor systems; Signal to noise ratio; Target tracking; Transmitters; Wireless sensor networks;
Conference_Titel :
System of Systems Engineering, 2006 IEEE/SMC International Conference on
Conference_Location :
Los Angeles, CA
Print_ISBN :
1-4244-0188-7
DOI :
10.1109/SYSOSE.2006.1652311
